Tagged Questions
1
vote
2answers
2k views
Signatures: RSA compared to ECDSA
I'm signing very small messages using RSA, and the signature and public key are added to every message, which requires a lot of space compared to the actual content.
I'm considering switching to ...
1
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2answers
543 views
Why DSA cannot be used for encryption?
Here it is mentioned that DSA cannot be used for encrypt. But Both RSA and DSA can be used to generate public and private keys, right? (Or am I wrong?). Then why can't I use the DSA public key to ...
2
votes
1answer
111 views
Signing a GCM MAC
If I encrypt a message with AES-GCM, is it safe to use the MAC as the hash in a DSA/RSA signature? That is, if someone knows the AES key and nonce, will they be able to generate a different message ...
4
votes
1answer
198 views
Threshold Signatures for RSA and DSA
I have a few questions relating to threshold signatures: a scheme where $n$ participants hold a key share and any $t$ of them can conduct a protocol using their shares that results in a valid RSA or ...
1
vote
1answer
231 views
What algorithm does PGP use to encrypt email?
I know it uses RSA/DSA to create keys, but does it use that same algorithm for the actual cipher?
